Doubtful that is quite what “Jarod” said, but regardless, Obama didn’t stop them from enriching uranium, rather limited how much they could enrich per year and that it was closely monitored by agreed upon inspection. It wasn’t an end all agreement, however it did postpone Iran from developing a weapon any time soon. Trump ripped up the “deal” and Iran immediately started accelerating their capacities
Several notes on the treaty, it was the first “deal”anyone had ever attained from Iran, and the only one since, plus, it was negotiated and agreed upon by all the major world powers to include full Russian and Chinese involvement
And in the end, given Iran’s tenacity, Trump’s “deal,” which he has to have now for an exit ramp, won’t come close in squeezing the same out of Iran